{"product_id":"milltek-active-valved-cat-back-with-x-pipe-system-cerakote-black-2026-mustang-5-0l-gt-fastback","title":"Milltek Active Valved Cat-Back with X-Pipe System (Cerakote Black) – 2026 Mustang 5.0L GT Fastback","description":"\u003cdiv class=\"description\"\u003e\n    \u003cp\u003eThe \u003cstrong\u003eMilltek Active Valved Cat-Back with X-Pipe System\u003c\/strong\u003e in \u003cstrong\u003eCerakote Black\u003c\/strong\u003e is built for 2026 Mustang GT Fastback drivers who want that sharp, European-style tone at WOT—without giving up the low-key behavior during cold starts or highway cruising. It’s a full stainless setup, finished in matte black Cerakote for a stealthy, heat-resistant look that doesn’t scream for attention but still means business.\u003c\/p\u003e\n    \n    \u003ch2\u003eWhat It Solves\u003c\/h2\u003e\n    \u003cp\u003eFord did a decent job giving the 2026 Mustang GT a dual-mode exhaust, but the factory cat-back is still \u003cstrong\u003eoverly muffled\u003c\/strong\u003e, choked up, and more concerned with noise regulations than actual performance. This Milltek system fixes the problem by ditching the stock midsection and mufflers in favor of a \u003cstrong\u003estraight-through X-pipe design\u003c\/strong\u003e with factory valve compatibility—giving you full tone control, less restriction, and a deeper, higher-rpm-optimized sound profile.\u003c\/p\u003e\n    \n    \u003ch2\u003eWhat It Improves Over Stock\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eEliminates flow restrictions\u003c\/strong\u003e from factory resonators and mufflers\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eCerakote Black tips and coating\u003c\/strong\u003e resist heat and corrosion while delivering a murdered-out appearance\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eX-pipe crossover\u003c\/strong\u003e enhances rasp and upper-RPM clarity over traditional H-pipe setups\u003c\/li\u003e\n      \u003cli\u003eRetains full \u003cstrong\u003eactive exhaust functionality\u003c\/strong\u003e through factory valve motor reuse—no weird wiring needed\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003eThis setup is part of our full \u003ca href=\"https:\/\/www.lethalperformance.com\/shop-now\/vehicle-selector\/ford-mustang-v8-gt\/2026-2025-mustang-gt\/exhaust\/catbacks\"\u003e2026-2025 Mustang GT Cat-Back Exhausts\u003c\/a\u003e collection for good reason—it walks the line between form and function with precision.\u003c\/p\u003e\n    \n    \u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eActive Exhaust Compatibility\u003c\/strong\u003e: Designed to reuse factory valve actuators for adjustable sound profiles on the fly.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eX-Pipe Midsection\u003c\/strong\u003e: Improves flow and high-RPM tone with a sharper, more exotic note than stock or H-pipe setups.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eCerakote Black Finish\u003c\/strong\u003e: Adds thermal protection and a stealthy matte appearance that resists corrosion and discoloration.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eT304 Stainless Steel Construction\u003c\/strong\u003e: Built to last with heat-resistant welds and smooth mandrel bends for consistent exhaust velocity.\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003eThis is one of several solid picks in our \u003ca href=\"https:\/\/www.lethalperformance.com\/shop-now\/vehicle-selector\/ford-mustang-v8-gt\/2026-2025-mustang-gt\/exhaust\/catbacks\/milltek\"\u003eMilltek cat-back exhaust systems\u003c\/a\u003e collection, perfect for performance-driven builds with a refined look.\u003c\/p\u003e\n    \n    \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: T304 stainless steel with Cerakote Black finish\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWeight Savings\u003c\/strong\u003e: Yes – lighter than OEM due to reduced muffler mass and streamlined pipework\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAdjustability\u003c\/strong\u003e: Fully integrates with factory active valve system—maintains drive mode sound control\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAdditional Required Components\u003c\/strong\u003e: None—direct reuse of factory exhaust valve motors\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003ePart Number\u003c\/strong\u003e: SSXFD426\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \n    \u003ch2\u003eWho This is For\u003c\/h2\u003e\n    \u003cp\u003eThis system is made for \u003cstrong\u003e2026 Mustang GT Fastback owners\u003c\/strong\u003e running the \u003cstrong\u003efactory active exhaust setup\u003c\/strong\u003e. If you’re after a tone that’s a little less old-school muscle and a little more Euro-inspired edge, the X-pipe and Cerakote finish make this kit a great match. Ideal for lightly to moderately modded builds—or even stock cars looking for a legit tone upgrade without drone or hacky installs.\u003c\/p\u003e\n    \u003cp\u003eNot compatible with non-valved or convertible GTs.\u003c\/p\u003e\n    \n    \u003ch2\u003eFitment \u0026amp; Installation Notes\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eVehicle Compatibility\u003c\/strong\u003e: 2026 Ford Mustang GT Fastback (5.0L V8), automatic and manual transmissions\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDirect Fitment or Requires Modifications\u003c\/strong\u003e: Direct bolt-on using OEM hangers and connections\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eInstallation Requirements\u003c\/strong\u003e:\n        \u003cul\u003e\n          \u003cli\u003eRequires reuse of factory active exhaust valve actuators\u003c\/li\u003e\n          \u003cli\u003eNo tuning or ECU updates needed\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eProfessional installation recommended\u003c\/strong\u003e to ensure correct valve alignment and exhaust tip fitment\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n    \n    \u003ch3\u003eWarnings\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eNot compatible with convertibles\u003c\/strong\u003e—this kit is Fastback-specific\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWill not function properly without OEM active exhaust\u003c\/strong\u003e—valve support is required\u003c\/li\u003e\n      \u003cli\u003eFor best results, pair with long tubes or high-flow mid-pipes—while it works with stock headers, you’re leaving power on the table\u003c\/li\u003e\n      \u003cli\u003eThis is a full cat-back system—\u003cstrong\u003enot just mufflers\u003c\/strong\u003e. Most buyers should opt for the complete system for proper flow and tone\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \n    \u003cp\u003eIf you’re chasing clean tone, low-key looks, and full factory function—all with better flow and a more modern rasp—this Cerakote-coated Milltek system is a top-tier choice. It sounds sharp, fits clean, and holds up to the abuse a daily-driven or canyon-carving GT is bound to see.\u003c\/p\u003e\n        \n\u003c\/div\u003e\n\u003cstyle\u003e\n    .description a {\n        color: #00a2e5 !important;\n    }\n    .description ul {\n        list-style: disc !important;\n        margin-left: 20px !important;\n        margin-bottom: 30px !important;\n    }\n    .description li {\n        float: none !important;\n    }\n    .description h2 {\n        margin-bottom: 20px;\n        display: block !important;\n    }\n    .description iframe {\n        margin: 30px auto;\n    }\n    .description hr {\n        margin: 30px auto;\n    }\n\u003c\/style\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":48146748178690,"sku":"MTK-SSXFD426","price":3153.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/0618\/0354\/files\/ssxfd426.jpg?v=1785009131","url":"https:\/\/www.lethalperformance.com\/products\/milltek-active-valved-cat-back-with-x-pipe-system-cerakote-black-2026-mustang-5-0l-gt-fastback","provider":"Lethal Performance","version":"1.0","type":"link"}